| 摘要 |
PURPOSE:To obtain the thermoelectric performance of high efficiency by using a nano composite material in which approximately all the peripheries of mother- phase fine particles are covered, fine particles are isolated and which has specified porosity. CONSTITUTION:When cordierite as a low thermal conductive material in a ceramic group is brought to power as a first substance 11, a bismuth, antimony or tellurium group alloy is employed as a second substance 12, and both cordierite and the alloy are mixed and hot-pressed, a high-density nano composite sintered body of porosity of 5% or less is acquired. The substance 11 is covered with the substance 12 approximately uniformly at that time. The thermal conductivity of the sintered body is halved approximately to the single sintered body of the substance 12. |
